Welcome to the website of the APDE group in Bilbao (at BCAM and EHU) working in mathematical analysis, partial differential equations, inverse problems, mathematical physics, and related topics.
EHU, October 15th, 2026, 12:00 - 13:00
Controllability of hyperbolic system
Hoai-Minh Nguyen - Sorbonne Université
In this talk, I will review results on the null-controllability, exact controllability of hyperbolic systems in one dimensional space for the optimal time. Both time-independent and time-dependent coefficients are discussed. Interesting and surprising phenomena occur. There is a finite gap for the optimal time in these cases even the time is involved only in the zero-order coefficients and even these coefficients are infinitely smooth. When the analyticity in time of the coefficients enters, the gap disappears. This is based on joint work with Jean-Michel Coron.
Current organizers: Daniel Eceizabarrena (BCAM), Mikel Florez (EHU), Arnab Roy (BCAM).